So the following spellings are all completely predictable?
U can teach children a rule by which they can spell the long oo sound?
Brutal, brute, crucial, crude, fluent, fluid, Fluke, flute, frugal, glucose, guru, intrude, jubilant, July, June, Jupiter, Jury, Juvenile, lubricate, ludo, ludicrous, lukewarm, luminous, lunar, lunatic, plural, prune, recluse, ruby, rude, ruin, rule, rural, secluded, truant, truce, truly, truth, Zulu. Gnu. Bruise, cruise, sluice; fruit, recruit.
Acoustic, bivouac, boutique, coupon, group, recoup, route, soup, toucan, tourist, troupe, wound, youth.
Shrewd, strewn. Brew, crew, drew, grew, screw, shrew, slew, strew, cashew. Clue, glue, rue, true, accrue, construe. Do, lasso, who. Tomb, womb. Lose, move, prove. Gruesome. Manoeuvre. Sleuth. Canoe.
Blew/blue, flew/flue/flu, poo/pooh, shoo/shoe/choux, threw/through, too/to/two, you/ewe/yew.
Baboon, balloon, bloom, boom, boon, boost, boot, brood, broom, cartoon, choose, cocoon, cool, doom, droop, food, fool, gloom, goose, groom, groove, harpoon, hoof, hooligan, hoop, hoot, lagoon, loom, loop, loose, loosen, loot, macaroon, maroon, mood, moon, moor, moot, mushroom, noodle, noon, noose, pontoon, poodle, pool, poop, poor, proof, roof, room, root, saloon, school, schooner, scoop, scoot, scooter, shoot, smooth, snooker, soon, soothe, spoof, spook, spool, spoon, stool, stoop, swoon, swoop, tool, tooth, troop, whoop, zoom. Boo, coo, goo, loo, moo, woo, zoo, bamboo, cockatoo, hullabaloo, igloo, kangaroo, shampoo, tattoo, voodoo, yahoo.